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使用特定便原蛋白酶敏感基质检测结肠直肠瘤:试点研究

Roza C M Opperman1,2,3, Sofie Bosch1,2, Kamran Nazmi4

  • 1Department of Gastroenterology and Hepatology, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands.

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研究人员开发了新的便测试,以检测结直肠癌 (CRC) 和晚期腺瘤 (AA). 一种特定的基质在患有这些疾病的患者中显示降低了降解,提供了潜在的非侵入性查方法.

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科学领域:

  • 生物化学 生物化学
  • 胃肠病学 胃肠病学
  • 在瘤学瘤学.

背景情况:

  • 晚期腺瘤 (AA) 和结直肠癌 (CRC) 查对于减少发病率和死亡率至关重要.
  • 目前的便免疫化学测试对AA的敏感性有限,错误阳性率高.
  • 蛋白酶通过血管生成和免疫调节参与CRC的发展.

研究的目的:

  • 为了确定与结直肠瘤相关的蛋白酶及其基质,进行一项新的非侵入性查测试.
  • 应用便蛋白酶分析,这是一种先前仅限于组织样本的创新方法.

主要方法:

  • 设计了18种化基质,并在CRC,AA,非晚期腺瘤患者和对照患者的便样本中进行了测试.
  • 基质降解与蛋白质组数据相关,以识别蛋白质酶.
  • 蛋白酶抑制剂和ZnCl2用于进一步表征.

主要成果:

  • 18种基质中的7种在患有结直肠瘤的患者中显著降低了蛋白质分解降解.
  • 在AA和CRC患者中,l-酸-l-谷氨酸 (ED) 基质的降解显著减少.
  • 通过ZnCl2和囊蛋白酶抑制剂NEM,ED降解进一步减少.

结论:

  • 成功开发了针对结肠直肠瘤的化基质.
  • ED基板显示出检测晚期腺瘤和结直肠癌的潜力.
  • 结果表明与依赖的囊蛋白酶有联系,尽管需要进一步识别.